Mount Mica is one of the most well-known sources of high-quality tourmaline in the world

growing over or alongside white to gray albite

Clarity:  Opaque Sharp 6 Rays Star

impactites and shatter cones are directly linked to them and their impacts

Pseudomorph Goethite After Marcasite | Prophecy Stone | 59.8gr | Farafra Oasis, Egypt Leifite Mount Mica is one ofPseudomorphs are mineral specimens that have the external shape of one mineral but are composed of another. The pseudomorph goethite after marcasite forms when marcasite is exposed to oxidizing conditions and starts to oxidize and break down. As the marcasite breaks down, goethite replaces it in the crystal structure, preserving the shape of the original marcasite crystal. The resulting specimen appears as a marcasite crystal, but is actually composed